Let's go a step further,
What happens if you put a dry wooden broomstick down the center of an
aluminum tube vertical.
Then a wet Broomstick.
Best Regards
Dan Schaaf
K3ZXL www.k3zxl.com
"Problems cannot be solved by the same level of thinking that created
them." - Albert Einstein
----- Original Message -----
From: "David Gilbert" <xdavid@cis-broadband.com>
To: <towertalk@contesting.com>
Sent: Wednesday, December 28, 2011 4:05 PM
Subject: Re: [TowerTalk] Trees and Verticals
>
> That would be an interesting configuration to model in the manner that
> Jim Lux suggested (using a set of resistive wires to simulate the tree),
> but I'm pretty sure that the losses would be significant if the tree
> itself was indeed lossy. Normally the fields inside a closed structure
> are minimal, but that's because (unless I am mistaken ... which is
> entirely possible) the E-fields generated by current through the various
> wires/surfaces repel each other. If you put a lossy medium in the
> middle they get absorbed before they repel each other.
>
> I'm guessing that would be the second worst way to use a tree as far as
> efficiency is concerned. The worst would probably be to bore a long
> hole down the center of the trunk and run the wire through it.
> Stealthy, yes ... efficient, no.
>
> 73,
> Dave AB7E
>
>
>
> On 12/28/2011 1:41 PM, Dan Schaaf wrote:
>> What happens if you make the vertical as a cage of vertical wires around
>> the tree ? Joined at the top and joined and fed at the bottom. The tree
>> is in the center of the cage.
>>
>> Cage wire antennas seem to have a broad bandwidth. But what happens to
>> the tree losses when the tree is caged ?
>>
>>
>> Best Regards
>> Dan Schaaf
>> K3ZXL www.k3zxl.com
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